Grafting-machine.



A ROBERTSON. GRAFTING MAOHINE.

APPLICATION FILED AUG. 29, 1911.

1,023,038. Patented Apr. 9, 1912.

WITNESSES INVENTOR I I ATTORNEYS machine; Fig.

resident of Harrison Hot Springs, in the which similar characters of reference indieled backs D provided with slots leading to UNITED sures PATENT OFFICE.

SPRINGS, BRITISH COLUMBIA, CANADA:

ALEXANDER ROBERTSON, OF'HARRISON HOT GRAFTING-MAGHINE.

Specification of Letters Patent. Patented Apr. 9, 1912. Applicationfiied August 29, 1911. Serial No. 646,602.

and II for supportmg grafts or scions I or To all whom it may concern:

Be it known that I, ALEXANDER ROBERT- SON, a citizen of the British Empire, and a Province of British Columbia and Dominion of Canada, have invented a new and Improved Grafting-Machine, of which the following is a full, clear, and exact description.

The invention relates to horticulture, and its object is to provide a new and improved grafting machine, more especially designed for use in nurseries and the like, and arranged to cut the graft or scion diagonally with a shearing cut to prevent bruising or otherwise injuring thegraft or scion.

For the purpose mentioned, use is made of a rotary cutter head provided with beveling knives, a table for the grafts or scions to rest on, and guides on the table at an angle to the cutting edges of the knives to guide the grafts or scions.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in

F by guides J and J pivoted at their ner ends 'at J J to the tables outer free ends of the guides being pressed in an inward direction by springs K, as will be readily understood by reference to the drawings. The tables H and II extend in opposite directions from theshaft C and the guides J are on the top of the table II together with the scions or grafts I to be treated, while the guides J are on the under side of the table II together with the grafts or scions I to be treated.

The cutter head D is also provided on each face with one or more slitting knives L adjustably secured in corresponding recesses I)* formed in the cutter head, the slitting knives fastened in place after the desired adjustment is made by set screws N screwing inthe cutter head, i

cate corresponding parts in all the views.

Figure 1 is a plan view of the grafting 2 is a sectional side elevation of the same. on the line 22 of Fig. 1 and showing part of the cutter head broken out; Fig.' 3 is an enlarged sectional plan view of the cutter head showing more particularly a slitting knife, the section being on the line 3-3 of Fig. 2; and Fig. 4-is a cross section of the cutter head on the line eit of Fig.2.

On a suitably constructed stand A are mounted bearings B, in which is journaled a shaft C carrying a cutter head D and a pulley E connected by a belt with other machinery for imparting a continuous rotary motion to theshaft C and the cutter head D, to rotate the latter in the direction ofthe arrow a shown in Fig. 2. The cutter head l) is provided in its peripheral face with cut-out portions D -forming bevas indicated in Fig. 3. In practice, both end faces of the cutter head D are provided with beveling knives F and slitting knives L, and the two guides J and J are provided II and II, so that four grafts or scions may be treated at the same time, that is, the grafts or scions can be gradually fed along the guides J toward the knives F and L, so. as to cause the said knives to bevel the inner ends of the grafts or scions I or I, and at the same time provide the same with slits for forming splices.

It is understood that the grafts or scions the cutter head rotates at a high rate of speed (say I500 to .2000 revolutions per minute), the grafts or scions are gradually. pared or sheared and hence are not liable to be bruised or otherwise injured.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:-

1. A grafting machine, comprising a vertically disposed revoluble cuttemhead, substantially cylindrical in. form and having the opposite end faces of the cutter head 1), as plainly'indicated in Fig. 4. On each of the beveled backs D is adjustably secured a bcvoling knife F by the use of a screw G or other-fastening device, the beveling knife F projecting through one of the slots of the cutter-head before mentioned and havflat ends, knives mounted in said cutter-head ing its cutting edge F pro ecting beyond to pro ect from its said ends, and a support, the and means to guide a graft or scion augucorresponding end face of the cutter are arranged tables i I adapted to be guided to the cutting edges H, H the for each table I are inserted endwise in the machine, and as larly toward the said ends of the cutterhead.

2. A grafting machine, comprising a vertically revoluble cutter head provided at its end face with a slot, at beveling knife held on the said head and having its cutting edge projecting through the said. slot beyond the end face of the cutter head, means for supporting a graft or scion and guiding it to the said cutting edge, and slitting knives heldfbn the end of the cutter head and having their cutting edges at an angle to the face of the head.

3. A grafting machine, comprising a revoluble cutter head, having each face provided with a slot leading to a beveled back on the cutter head, a beveling knife adjustably secured to each of the said backs and having its cutting edge projecting through the respective slot and beyond the respective end face of the cutter head, a fixed table for the graft or scion to rest on, and a guide pivoted on the said table and arranged at an angle to the cutting edge of the knife.

4. A grafting machine, comprising arevoluble cutter head having each face provided with a slot leading to a beveled back on the cutter head, a beveling knife adjustably secured to each of the said backs and having its cutting edge projecting through the respective slot and beyond the respective end face of the cutter head, a fixed table for the graft or scion to rest on, a guide pivoted on the said table and arranged at an angle to the cutting ridge of the knife, and a spring pressing the free end of the guide inward toward the cutter head face.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALEXANDER ROBERTSON.

Witnesses:

A. E. GALPIN, Ozno O. GOULD. 

